diff --git a/coreapi/help/doc/sphinx/conf.py.in b/coreapi/help/doc/sphinx/conf.py.in
index f2cece998..7deb8b4fd 100644
--- a/coreapi/help/doc/sphinx/conf.py.in
+++ b/coreapi/help/doc/sphinx/conf.py.in
@@ -91,6 +91,7 @@ html_theme = 'classic'
 # documentation.
 #
 html_theme_options = {
+	'body_max_width': '100%',
 	'collapsiblesidebar': 'true'
 }